Electrode holder



Filed Nov. 30, 1942 1y X- 0 fi/fredfif (Sta/Z74 LL 3 IN ENTOR.

face of the section 12.

Patented Nov. 30, 1943 UNITED STATES Parser Claims.

My invention relates to electric welding, and has among its objects and advantages the provision of an improved electrode holder.

In the accompanying drawing:

Figure 1 is a plan view of the electrode holder.

Figure 2 is a similar View with the holder opened.

Figure 3 is a shank end view.

Figure 4 is a view of the opposite end.

Figure 5 is a sectional view along the line 5-5 of Figure 1, and

Figure 6 is a sectional view along the line 5-6 of Figure 1.

In the embodiment of the invention selected for illustration, I mak use of a clamp l0 comprising a first section l2 having a shank H for insertion in the handle it. Upon the fiat face [8 of the section [2 is mounted a section 20. These two sections fit face to face, with the meeting faces lying in a plane coaxial with the shank M.

A screw 22 extends through the section l2 and is riveted at 24 to prevent accidental removal of the screw. An opening 26 is provided in the section 20 for loosely receiving the screw 22 so that the section 20 may be pivoted relatively to the section 12. The head 28 of the screw 22 is countersunk in the outer face of the section 20. A recess 36 is formed in the inner face of the section 20 for a compression spring 32 to frictionally restrain the section 29 from accidental rotation on the screw 22.

Diagonal, longitudinal and transverse V-shaped grooves 34, 3'6 and 38 are provided in the inner These grooves constitute receptacles for the electrode 40, the groove selected for the electrode depending upon the desired position of the electrode with respect to the axis of the holder.

Figure 6 illustrates the groove 38 as being of progressively increasing depth from one side of the section l2 to the other. Both sections l2 and 20 are of the same width and thickness throughout their face engaging lengths. An angular face 4G is provided on the section 23 to facilitate pivotal movement of thesection across the electrode positioned in one of the grooves in the section I2.

Channel shaped bodies of insulation 42 are mounted on the sections i2 and 20, these bodies being held to their respective sections by screws 44 whose heads are countersunk in the bodies and covered with insulation as at 45.

The holder provides a construction which is relatively short, light and easily manipulated. The holder may be used in small, cramped and difficult places and positions, particularly where it is necessary to reach corners or work through small openings. Such work can be done without the aid of a stinger, and the holder is connected directly with the lead.

Without further elaboration, the foregoing will so fully explain my invention, that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

I claim:

1. An electrode holder comprising first and second sections having meeting faces, means pivotally connecting the first and second sections for relative pivotal movement in a plane corresponding to the plane of said meeting faces, one of said sections having an electrode engaging formation in its meeting face for clamping the electrode against the meeting face of the other section, and means interposed between said first and second sections and frictionally engaging the meeting face of one section to restrain the two sections from accidental pivotal movement.

2. An electrode holder comprising first and second sections having meeting faces, means pivotally connecting the first and second sections for relative pivotal movement in a plane corresponding to the plane of said meeting faces, one of said sections having an electrode engaging formation in its meeting face for clamping the electrode against the meeting face of the other section, one of said sections having a recess, and a spring mounted in said reces and bearin against the meeting face of the other section to restrain the two sections from accidental pivotal movement.

3. The invention described in claim 1 wherein said firstsection is provided with a shank for connection with a lead, said means comprising a screw extending loosely through an opening in said second section and threaded into said first section, said second section being provided with a recess arranged concentrically of said screw, and a compression spring mounted on said screw in said recess and having one end bearing against the meeting face of the first section.

4. The invention described in claim 1 wherein said first and second sections are of the same width, and channel shaped insulating means secured to the first and second sections about their nonmeeting faces.

5. The invention described in claim 1 wherein one of said meeting faces terminates in an angular face to facilitate pivotal movement of its respective section to an electrode clamping position with respect to the other section.

ALFRED R. STALKUP. 

